In water solutions of HCl, the free H ion is present...

Question

a. in very large quantities

b. in moderate quantities

c. in small quantities

d. is not present

Answer 1

Chemists tend to use the term H ions as a convenient shorthand for saying hydronium ions. Especially older chemists who were taught this. I guess the asker is using the term H ions in this sense. The answer is that H ions are present in large quantities because HCl is a strong acid and dissociates completely into H+ ions and Cl- ions (or if you really insist on being precise - It dissociates completely into H3O+ ions.....)

But think carefully about this:

The updated IUPAC nomenclature also recommends the use of oxonium and oxidanium in organic and inorganic chemistry contexts (in particular it states NO hydronium).An oxonium ion is any ion with a trivalent oxygen cation. For example, a protonated hydroxyl group is an oxonium ion, but not a hydronium. It should be written OH3+.

Answer 2

I would pick "d" because any free H+ ions would immediately form a hydronium ion with a water molecule, H3O+.

Answer 3

check similar question or ask at http://chemions.grou.ps

Answer 4

Is present in very large quantities if the solution of HCl is high

Answer 5

I would say very moderate quantities, because once hydrochloric acid is mixed with water your going to get free H^+1 ions nonetheless, but in moderate quantities because of the bonding that exists.